THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS 25 Birch Street, Cambridge, MA 02138 USA Tel. 617-354-0484 Fax 617-354-0665 INTERNET: aavso@aavso.org * * * AAVSO NEWS FLASH * * * Subject: SN 1998bn, FO Per, SU Tau No. 292 April 29, 1998 ____________________________________________________________________________ SUPERNOVA 1998bn IN NGC 4462 We have been informed by the Central Bureau for Astronomical Telegrams (IAU Circular 6886) of the discovery by the Lick Observatory Supernova Search team, of a supernova in NGC 4462. Unfiltered CCD images taken on April 17.3 UT and April 27.3 UT showed the supernova at approximate magnitudes 17.4 and 13.7, respectively. The supernova is located at: R.A. = 12h 29m 18.88s Decl. = -23 degrees 09' 49.2" (equinox 2000.0) which is about 32.3" west and 9.7" north of the nucleus of NGC 4462. For more information on this discovery please see AAVSO Alert Notice 247. This Alert Notice and a chart for SN 1998bn are available from our FTP site: ftp.aavso.org (198.116.78.2), in /pub/alerts/alert247/ This information may also be accessed through our Web site at the following address: http://www.aavso.org We congratulate the Lick Observatory Supernova Search team on this discovery! ----------------------------------------------------------------------------- FO PERSEI The dwarf nova type cataclysmic variable FO Per appears to be in outburst, as indicated by the following observations: AAVSO Observer UT Mag. Initials APR 21.1778 <13.7 HSG APR 26.0549 13.0 BRJ APR 29.0715 13.2 BRJ ----------------------------------------------------------------------------- SU TAURI The R CrB type variable SU Tau continues to recover from its most recent low state (see also News Flash 287), as indicated by the following observations: AAVSO Observer AAVSO Observer UT Mag. Initials UT Mag. Initials APR 19.1569 13.5 HSG APR 22.1903 12.7 CCDV RR APR 20.1736 13.1 RR APR 22.8 12.9 VET APR 21.0604 13.1 BRJ APR 26.0583 12.8 BRJ APR 21.1729 13.2 HSG APR 28.1778 12.8 CCDV RR APR 22.0813 13.0 BRJ APR 29.0590 12.6 BRJ ----------------------------------------------------------------------------- We thank the following contributors for the data that they have provided for this News Flash: BRJ - J. Bortle, USA HSG - G. Hanson, USA RR - R. Royer, USA VET - M. Verdenet, France Please monitor these and other variable stars closely and phone-in, fax, or e-mail your observations to the AAVSO. Good observing! Rebecca Pellock, Technical Assistant on behalf of Janet A. Mattei, Director ____________________________________________________________________________ Symbols may include: < = fainter than magnitude given (variable not seen) : = uncertain CCDV = Charge-coupled device with (V) filter If you would like to contribute to AAVSO NEWS FLASH, please send observations of unusual variable star activity to: observations@aavso.org Those who wish to subscribe (free of charge) or unsubscribe to NEWS FLASH may do so by sending a message to: observations@aavso.org If you would like data from the AAVSO International Database for research purposes, please send your request to: Janet Mattei, AAVSO Director, at aavso@aavso.org We look forward to including your observations in future editions of AAVSO NEWS FLASH! ___________________________________________________________________________